All levels are referenced to the International Great Lakes Datum of (IGLD 85). Water levels have been coordinated with Canada for For water level forecasts, click here. Download the Long Term Average, Maximum, and Minimum Great Lakes Water Levels in english units (feet). Download the Long Term Average, Maximum, and Minimum Great. Levels of Lake Superior have been regulated since Levels of Lake Ontario have been regulated since In addition, five Great Lakes diversions also contribute to regulation of lake levels. Current regulations of lake levels do not affect long-term lake level trends and cannot influence lake levels significantly in the short term. The IJC is responsible for regulating outflows from Lake Superior and Lake Ontario affecting water levels and flows in the Great Lakes and St. Lawrence River. In , it established a Great Lakes-St. Lawrence River Adaptive Management Committee, known as GLAM, to provide ongoing monitoring and assessment of these regulated outflows. The committee reports to the IJC’s three Great Lakes water level boards and is directed by the IJC to provide an ongoing assessment of regulation plans and examine how these plans perform under a range of actual and potential future hydrologic conditions.
Water levels are referenced to both the International Great Lakes Datum of (IGLD85) and the selected lake’s long-term average water level (since ), which is zero on the slider. For a detailed description of lake level mapping, see the methods document. Great Lakes Water Levels. Great Lakes water levels are continuously monitored by U.S. and Canadian federal agencies in the region through a binational partnership. NOAA-GLERL relies on this water level data to conduct research on components of the regional water budget . Regulation; Roles and Responsibilities; Orders of Approval; Directives. Board Directive; Directive on Operational Adjustments, Deviations and Extreme Conditions; Members; Watershed. and High Water Events; Recent & Expected Conditions. Water Levels; Flows; Lake Ontario Outflow Changes; Forecasts; Weekly Regulation Summary. Forecasted water levels for March 6th are well above their long-term average March levels and above levels of last year by 1 to 14 inches. Since February 6th, water levels have declined about 3 inches on Lakes Superior, Michigan-Huron, and Lake St. Clair. Lake Erie has risen 1 inch since last month, while Lake Ontario is near its level from a.
Regulation oi Water Levels in the Great Lakes A paper presented on Oct. 29, , at the Ohio Section Meeting, Dayton, Ohio, by Harley F. Lawhead, Chief, Great Lakes Hydraulics Branch, US Corps of Engrs., Chicago, III. SOME system knowledge as a whole of is the essential Great Lakes to an system as a whole is essential to an. Great Lakes Water Levels * Mean levels are calculated by averaging the best available gage data at report generation and are subject to change. ** Period of Record - File Size: 58KB. Daily Great Lakes Water Levels Lakewide average levels are based on a network of water level gages located around the lakes. LTA and record levels are computed from a period of record of to Elevations are referenced to the International Great Lakes Datum (). Updated −05−File Size: 48KB. Click here for an update on current water levels conditions, weather, and outflows and a forecast of water levels over the next month. Connecting Channels Forecast. Click here for a forecast of water levels over the next month on the St. Marys, St. Clair, Detroit, and St. Lawrence shipping channels. Monthly Bulletin of Great Lakes Water Levels.